package com.lizhenyao.waimai.service.impl;

import com.lizhenyao.waimai.dto.OrderDTO;
import com.lizhenyao.waimai.enums.ResultEnum;
import com.lizhenyao.waimai.exception.SellException;
import com.lizhenyao.waimai.service.IOrderService;
import com.lizhenyao.waimai.service.IPayService;
import com.lizhenyao.waimai.utils.JsonUtil;
import com.lizhenyao.waimai.utils.MathUtil;
import com.lly835.bestpay.enums.BestPayTypeEnum;
import com.lly835.bestpay.model.PayRequest;
import com.lly835.bestpay.model.PayResponse;
import com.lly835.bestpay.model.RefundRequest;
import com.lly835.bestpay.model.RefundResponse;
import com.lly835.bestpay.service.BestPayService;
import com.lly835.bestpay.service.impl.BestPayServiceImpl;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;

/**
 * @Author: lizhenyao
 * @Desciption:
 */
@Service("iPayService")
@Slf4j
public class PayServiceImpl implements IPayService{

    private static final String ORDER_NAME = "微信点餐订单";

    @Autowired
    private BestPayServiceImpl bestPayService;

    @Autowired
    private IOrderService iOrderService;

    @Override
    public PayResponse create(OrderDTO orderDTO) {
        PayRequest payRequest = new PayRequest();
        payRequest.setOrderId(orderDTO.getOrderId());
        payRequest.setOpenid(orderDTO.getBuyerOpenid());
        payRequest.setOrderAmount(orderDTO.getOrderAmount().doubleValue());
        payRequest.setOrderName(ORDER_NAME);
        payRequest.setPayTypeEnum(BestPayTypeEnum.WXPAY_H5);
        log.info("[微信支付] request={}", JsonUtil.toJson(payRequest));

        PayResponse payResponse = bestPayService.pay(payRequest);
        log.info("[微信支付] response={}", JsonUtil.toJson(payResponse));
        return payResponse;
    }

    @Override
    public PayResponse notify(String notifyData) {
        //1.验证签名
        //2.支付状态
        //3.支付金额
        //4.支付人(下单人 == 支付人)
        PayResponse payResponse = bestPayService.asyncNotify(notifyData);
        log.info("[微信支付异步回调] 异步通知, payresponse={}", JsonUtil.toJson(payResponse));

        //获取到订单
        OrderDTO orderDTO = iOrderService.findOne(payResponse.getOrderId());
        //判断订单是否存在
        if (orderDTO == null){
            log.error("[微信支付] 异步通知,订单不存在,orderId={}", payResponse.getOrderId());
            throw new SellException(ResultEnum.ORDER_NOT_EXIST);
        }

        //判断金额是否一致
        if (!MathUtil.equals(payResponse.getOrderAmount(), orderDTO.getOrderAmount().doubleValue())){
            log.error("[微信支付] 异步通知,订单金额不一致, orderId={},微信通知金额={}, 系统订单金额={}",
                    payResponse.getOrderId(),
                    payResponse.getOrderAmount(),
                    orderDTO.getOrderAmount());
            throw new SellException(ResultEnum.WXPAY_NOIFY_MONNEY_VERIFY_ERROR);
        }
        //修改订单的支付状态
        iOrderService.paid(orderDTO);
        return payResponse;
    }

    /**
     * 退款
     * @param orderDTO
     */
    @Override
    public RefundResponse refund(OrderDTO orderDTO) {
        RefundRequest refundRequest = new RefundRequest();
        refundRequest.setOrderId(orderDTO.getOrderId());
        refundRequest.setOrderAmount(orderDTO.getOrderAmount().doubleValue());
        refundRequest.setPayTypeEnum(BestPayTypeEnum.WXPAY_H5);
        log.info("[微信退款] request={}", JsonUtil.toJson(refundRequest));

        RefundResponse refundResponse = bestPayService.refund(refundRequest);
        log.info("[微信退款] response={}", JsonUtil.toJson(refundResponse));
        return refundResponse;
    }
}
